Disequilibrium distribution of genotypes in the pairs of isozyme loci in the pine populations of the forest-steppe regions of Siberia

Abstract

We performed an analysis of linkage disequilibrium of alleles of 15 allozyme loci in 35 populations of Scots pine in the Siberian part of the range between 50° and 56° N and 79° and 107° E. We found a significant deviation in the distribution of genotypes of 1–9 pairs of loci in the investigated samples. We established correlations between frequencies of certain pairs of linked loci with ecological conditions and geographical coordinates of habitats of the pine populations. We present the results of comparative analysis of the differences in certain morphological features of trees with significantly predominant genotypes for pairs of linked loci in three isolated populations: in the south of Krasnoyarsk krai, Khakassia, and Tuva.